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The G string of a guitar which should be 392 Hz is playing flat at 380 Hz. What percentage change in the tension of the wire is required so as to tune the string to 392 Hz?
q1. what effect will increase in temperature from 25 degree celsius to 32 degree celsius of the metal metre stick have
a 1 mW laser produces photons of wavelength 633 nm. How many photons per second does the laser emit
A car goes 13 miles east, then due North ending up 25 deg North of East from its initial position. How far due North did it travel
An asteroid is discovered heading straight toward Earth at 13 km/s. An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10 min, after which the asteroid is moving at 26 degree to its original path at..
A 157g ball is tied to a string. It is pulled to an angle of 8.00 degrees and released to swing as a pendulum. How long is the string
You have landed on an unknown planet, Newtonia, and want to know what objects will weigh there. You find that when a certain tool is pushed on a frictionless horizontal surface by a 12.6 force, What would it weigh on earth
What is the total negative charge, in coulombs, of all the electrons in a small 1.05g sphere of carbon? One mole of C is 12.0g, and each atom contains 6 protons and 6 electrons.
A truck driver is broadcasting at a frequency of 33.103 MHz with a CB (citizen's band) radio. Determine the wavelength of the electromagnetic wave
A loudspeaker of mass 21.0 {rm kg} is suspended a distance of h = 2.40 {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has the length of l = 3.90 {rm m}.
A person with a mass of 52 kg runs with a speed of 6.8 m/s jumps onto the outer rim of a merry-go-round. What is the mass (in kg) of the merry-go-round
Three resistors are connected to a in series with a 19 V ideal battery, What is the current coming out of the battery
Aaron (mass 60 kg) catches his running cat (mass 5 kg) moving horizontally at 1.5 m/s. What is the speed of Aaron and his cat after the catch
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